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Trade receivables (Tables) | 12 Months Ended
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Dec. 31, 2017
Trade receivables |
Summary of trade receivables |
|  | As of December 31, |
Current trade receivables |  | 2017 |  | 2016 |
Fixed and mobile services |  | 9,232 |  | 8,210 |
Allowance for doubtful accounts |  | (596) |  | (633) |
|  | 8,636 |  | 7,577 |
Non-current trade receivables |  |  |  |  |
Fixed and mobile services |  | 12 |  | 208 |
Total trade receivables, net |  | 8,648 |  | 7,785 |
Schedule of movements in the allowance for doubtful accounts |
|  | Years ended December 31, |
|  | 2017 |  | 2016 |
At the beginning of the fiscal year |  | (633) |  | (386) |
Additions –Bad debt expenses |  | (1,113) |  | (1,228) |
Uses |  | 1,162 |  | 989 |
Currency translation adjustments |  | (12) |  | (8) |
At the end of the year |  | (596) |  | (633) |

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